The XP is a really outdated design. Slow, piggish, and just not really very fun to paddle compared to other X-overs.
The Traverse is a great boat, but has quite a bit of rocker to it. The skeg is also fairly small as you mentioned. The other thing I didn't care for is the location of the skeg cable, which takes up quite a lot of room and gets in the way when packing. The bulk head / foot peg system is pretty nice though.
I would also look at the Katana or the Fusion, as they're both a bit quicker on calm water. I've paddled all 4 fully loaded and for me, the Katana paddles the best and has the most comfortable outfitting.